to go from one region , or country to settle in another , esp. in a foreign country
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to provide sth. in order to remedy a deficiency
of , relating to , derived from , or characteristic of a mother
to make or become greater in number , amount , strength , etc.; increase
下列刚体运动中,作平动的刚体是( )。
A. 沿直线轨道运动的车箱
B. 沿直线滚动的车轮
C. 在弯道上行驶的车厢
D. 滚木的运动
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